1. Geography 372 Introduction to Remote Sensing University of Maryland Compton Tucker & Meagan Weiner

4. Geostationary and polar orbits

7. Hurricane Web Sites http://www.nrlmry.navy.mil/tc_pages/tc_home.htmlhttp://www.nrlmry.navy.mil/tc_pages/tc_home.htmlhttp://www.nrlmry.navy.mil/tc_pages/tc_home.html http://seawifs.gsfc.nasa.gov/SEAWIFS.htmlhttp://seawifs.gsfc.nasa.gov/SEAWIFS.htmlhttp://seawifs.gsfc.nasa.gov/SEAWIFS.html http://earthobservatory.nasa.gov/Newsroom/NewImages /images_index.php3http://earthobservatory.nasa.gov/Newsroom/NewImages /images_index.php3http://earthobservatory.nasa.gov/Newsroom/NewImages /images_index.php3http://earthobservatory.nasa.gov/Newsroom/NewImages /images_index.php3 http://rapidfire.sci.gsfc.nasa.gov/gallery/http://rapidfire.sci.gsfc.nasa.gov/gallery/http://rapidfire.sci.gsfc.nasa.gov/gallery/ http://www.nhc.noaa.gov/http://www.nhc.noaa.gov/http://www.nhc.noaa.gov/ http://rsd.gsfc.nasa.gov/goes/http://rsd.gsfc.nasa.gov/goes/http://rsd.gsfc.nasa.gov/goes/

8. Lecture 3 September 16, 2003 Sun, Atmosphere, Plants Important information from today’s material: 1.Basic information about the sun; 2.Gaseous absorption by atmospheric constituents; 3.Leaf reflectance, leaf structure, and photosynthesis; 4.Hurricane monitoring with remote sensing; 5.Defense against biological terrorism.

9. Homework September 16, 2003 (A). Construct neat spectral curves to represent astroturf, asphalt, concrete, Maryland red clay soil, and the Pizza Hut roof from 0.4 to 1.0 µm. (B). Construct neat spectral curve plots to represent the following materials over the spectral interval of 0.4 to 3 µm: a typical soil, pine trees, broadleaf forest vegetation in summer, and broadleaf forest vegetation in early fall.

10. Total Energy Flux: M =  T 4   = 5.67x10 -8 w/m 2 *K 4 Wavenumber = 1/ (#  per unit distance) Energy per photon: E p = h * frequency E p = h*c/  E p  *   J sec *3*10 8 m sec -1 Ergo: X-rays and  -rays are energetic!

11. Astroturf and real green vegetation

12. Pizza Hut on Rt. 1

13. Pizza Hut

14. Geog 372 Lecture 3 September 16, 2003 our star our atmosphere our vegetation

15. Atmospheres of Sun & Earth The most abundant elements Sun's Atmosphere Earth's Atmosphere Hydrogen90.7%Nitrogen 78.08 % Helium 9.1%Oxygen 20.95 % Carbon 0.036CO 2 0.0370% (370 ppm) Nitrogen 0.009Neon 0.0018% Oxygen 0.072Helium 0.0005% Neon 0.003Methane 0.00015%(15 ppm) Magnesium 0.002Ozone 0.0001% (10 ppm) Sulfur 0.001Krypton 0.0001% Iron 0.003Hydrogen 0.00005 Silicon 0.002 H 2 O Vapor 0 - 3% (varies)

16. Atmospheres of Mars & Venus The most abundant elements Mars' Atmosphere Venus' Atmosphere CO 2 96.0% N 2 3.5% SO 2 0.0150% (150 ppm) H 2 O 0.0100% (100 ppm) Ar 0.0070% ( 70 ppm) CO 0.0040% ( 40 ppm) Ne 0.0005% ( 5 ppm) Pressure 90 bars Temperature 730 K +457C! CO 2 95.0% N 2 2.7% Ar 1.6% 0 2 0.13% (1,300 ppm) CO 0.07% ( 700 ppm) H 2 O 0.03% ( 300 ppm) Pressure 0.007 bars Temperature 218 K -55C

17. 6000º 300 K UV, Visible,Near IR Sensors Thermal IR, Microwave Sensors Active Sensors reflected emitted

18. Spectral reflectance curves

19. Our Star

20. ~1370 watts/m 2

21. Solar flux falling on earth  T 4 *  r 2 * 4  distance sun 2 4  distance earth 2

22. 92%

23. Our atmosphere

24. Space Shuttle Limb Photographs Before Mt. Pinatubo Eruption After Mt. Pinatubo Eruption

26. Liquid Water Water = Life Where else could life begin? visible

27. Incoming/Outgoing max = 2898/5880 = 0.49  m max = 9.7  m

28. Solar Irradiance at Earth’s Surface Exoatmospheric Solar Irradiance atmospheric limb

29. Expand information Express it visually

30. Research and Beaver Dam Roads

31. True Color Photography or Imaging

32. Soon in lab we’ll work on this Ikonos image of BARC

33. True color False color

34. Research and Beaver Dam Roads

35. False Color or IR Photography or imaging

36. Byrd Stadium and area